sand wind barrier 3d model

Architectural and engineering 3D simulation video of a sand-encroachment prevention system. Clean technical Revit style combined with aerodynamic wind simulation. Visualized wind vector lines and blowing sand particles striking a layered green belt defense. The animation clearly demonstrates the physical mechanism: the defensive trench stops the bottom sand accumulation, while the multi-layered trees act as aerodynamic barriers, drastically reducing wind velocity and forcing sand particles to settle outside. Clear visual contrast between the chaotic storm outside and the calm protected urban environment inside. Slow camera panning across the cross-section, professional engineering presentation, 8k.